1 Geothermal energy has been around since the earth formed and is a renewable energy source. 2  The term âGeothermalâ derives from the Greek words âgeoâ (meaning earthâ and âthermeâ (meaning heat). 3  Geothermal activity provides the energy behind volcanoes, hot springs and geysers.hese facts are specific to how we can produce electricity from geothermal energy: 1  The process of generating geothermal power has been in existence for over a hundred years and was first tested in Italy by Piero Ginori Conti in 1903.
Plugged Ears Caused by Fluid in the Ear. Plugged ears can be a result of trapped fluid in the auditory tube. The auditory tube normally carries unwanted debris from the ears to the back of the throat where it is swallowed but sometimes it can become plugged and fluid becomes trapped in the middle ear.
Fluid in the Ear. 1  Conditions that can cause the auditory tube to become blocked can include enlarged structures such as tonsils, adenoids, and turbinates, or severe congestion. 2  It's common to have plugged ears for a while after you've had a severe cold and it can also be caused by allergies. Fluid in the ear is more likely to be the cause of plugged ears in children because their auditory tube is smaller in diameter and naturally more horizontal than an adult's auditory tube. Even though your ears may feel plugged, it is common to have little or no symptoms of fluid in the ear. It can, however, result in hearing loss and if left undiagnosed in small children, it can lead to speech delays.